The gold industry is very particular when it comes to measuring gold, which is not surprising considering how valuable it is relative to its size.

While many countries moved to metric system, the precious metals industry globally continued to use the historic troy ounce as its basic unit of measure. If you think it is an unfair advantage for countries that didn’t change, like the USA, you would be wrong as a troy ounce is not the same as an ounce – is it actually heavier. It is its own unique measurement unit.